Birds

| dimanche 9 juin 2013

           Birds


Birds are winged tetrapod vertebrates belonging to the clade of dinosaurs.  there are about 10 000 species of birds, both very different in ecology by their behavior, each of which has a common set of obvious characteristics for the group. Birds have such a beak, feathers, wings and lay eggs. and there are remarkable for their ability to fly ,
and thier is som beautifule  picturs of birds


















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